The original Chronic Renal Impairment in Birmingham (CRIB) study was published in 2003, documenting the relative lack of importance of traditional risk factors in CKD. Since this the BCRG have demonstrated abnormalities of vascular and ventricular function in patients with early stage CKD and gone on to design potential therapeutic strategies. In the randomised controlled trial CRIB-2, we investigated the effect of treatment with spironolactone, a mineralocorticoid receptor blocker (MRB), in combination with ACE inhibitors and or angiotensin receptor blockers in patients with early stage CKD. Previously considered to be contra-indicated in CKD, spironolactone was shown to improve prognostically important indices including arterial stiffness and left ventricular (LV) mass with improvement in markers of LV diastolic and systolic function.